Improvement in sewing-machines



T. D. JACKSON. Sewing Machirie.

Patented Aug. 24.1858.

UNITED STATES.

PATENT OFFICE.

TIMOTHY n. JACKSON, on NEW YORK, n. Y, ASSIGNOR To JOSEPH w.

BARTLETT, 0E sAME rLAoE.

IMPROVEMENT IN SEIWING MACHINES.

Specification forming part of Letters Patent No. 21,299, dated August24, 1858.

To all whom it may concern:

Be it known that I, TIMOTHY D. J AcKsoN, of the city, county, and Stateof New York, have invented a new and useful Improvement inSewing-Machines; and I do hereby declare the following to be a full,clear, and exact description thereof, reference being had to theaccompanying drawings, figures, and letters of reference thereon, makingpart of this specification.

Of the said drawings, Figure 1 represents a top view of .a cloth-holder(and myoperative mechanism) for securing the material to the tableduring the progress of sewing. Fig. 2 denotes an end view of the same.Fig. 3 shows a side or edge view of the same and the position of theneedle.

My invention is designed to apply to tambour-machines, or, as they aremore generally called, single-thread machines.

, The nature and object of the first part of my invention consists inthe employment and use "of a yielding roller so arranged as to close thebarb of the needle during the perforation of the material, and alsoduring the retraction of the needle, to prevent the barb catching in thema terial; and the nature of the'second part of my invention consists inarranging and combining with a flexible roller a swinging thread-guidewhich shallalways carry the thread in position for the barbed needle tocatch it.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

A represents a cloth-holder, which is to be suitably mounted andattached by a rod or bar at 7, Fig. 1, to the machine, that it may bedrawn away from the table to release the goods when sewed, and adjustedto holdthe material while sewing.

B is the needle, which is shown in Fig. 3 in an inclined position and byits vibration feeds the material.

C is a bar inserted in the plate A, which reciprocates by the action ofthe needle andspring 3, which spring is secured to the cloth-holder at8. This reciprocating bar forms the bearings for the roller 2, asplainly shown in Fig.

' 1. 1 is a swinging thread-guide having its fulcrum at 5 by means of apin or screw in the plate A, and is governed in its movements in onedirection-by the needle and in the opposite by a spring, 4, secured at9, and by afixed pin, 6-, Fig. 1. 1

Operation: The cloth-holder and its devices being properly attached to asewing-machine and motion being imparted to the needlestock causes theneedle to pass up through the cloth-holder and between the roller 2 andthe side of the holder near the stationary pin 6, the barb on the needlebeing on the side next the roller, as shown in Fig. 2 at a, the roller 2being shown in dotted lines. As the needle retracts from the goods, theguide 1 (which has a hole for the passage of the thread at 10, Fig. 3)is pressed upon by the needle in its vibration and swings so as to carrythe thread with certainty across the'path of the needle, and the barbonthe needle pressing against the roller closes it effectually, so as toprevent any more of the material from the barb in either direction ofthe needle. The importance of this yielding roller is to prevent thebreaking and injury of barbed needles in sewing-machines, as it readilyyields for the needle, while it at the same time serves to properlysupport it. In all machines of this character the breaking and wearingout of needles is a serious detriment, as the operation of closing thebarb over a stationary bar soon wears away the barb and unfits it foruse. The oflice of the thread-guide is merely to carry the thread inposition-for the needle to catch it, and in no way operates upon thebarb of the needle to close or open it. 7

Having thus described my improved sewing-machine, I claim- 7 v 1. Theemployment of a yielding roller, constructed as desired, for the purposeof closing the barb of the needle during its movements, substantially asset forth and specified.

2. In combination with a yielding roller,

the swinging thread-guide to carry the thread in position for the needleto insure the stitch, as set forth.

lVitnesses:

0. A. DURGIN, D. G. RowLANns.

